Can anyone tell me how to find the free chloride concentration and the total chloride concentration of spent hydrochloric acid?

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Ivana Tomaz

What is the concentration of the hydrochloric acid?

Santosh Kumar Sriramoju

5%(w/w)

Hydrochlorid acid is strong acid with Ka=1,3*10(6) so it is fully dissociated. In such case concentration of free chloride ions is equivalent to concentration of hydrochloric acid. Molar concentration of your solution is 1,41 mol/L.